Homogeneous catalysis in refinery processes is rare, mainly due to the separation difficulties that emerge. Thus, the very many benefits of the homogeneous catalysis are still kept apart from the petroleum industry. In the present research work, a successful application of hetero [....] » Read More
A series of alloy systems take place in class of advanced smart materials with adaptive properties and stimulus response to the external changes. Shape memory alloys take place in this group, due to the shape reversibility and capacity of responding to changes in the [....] » Read More
Few-layer graphene was synthesized via microwave-assisted catalytic graphitization due to its increasing demand and wide applications. The microwave irradiation temperature at a set holding time played a key role in synthesizing few-layer graphene. The highest degree of graphitiz [....] » Read More
Dimethyl ether carbonylation reaction over Mordenite has gained many attentions due to its mild reaction conditions and high product selectivity. However, Mordenite still suffered from short lifetime and poor stability. In this report, we summarized our work on improving catalyti [....] » Read More
Sodium-ion cells turn out to be a breakthrough compared to lithium-ion cells due to the similar amount of storage energy and much lower price and ease of production compared to lithium-ion cells. Sodium-ion batteries not only replace lithium with one of the most popular earth ele [....] » Read More
One of the biggest challenges currently facing humankind and the scientific community is the energy production and consumption without the use of fossil fuels. Big efforts have been invested in creating technologies that enable closed carbon or carbon neutral fuel cycles, decreas [....] » Read More
Phenol being toxic in nature needs to be removed from wastewater before its discharge. This research therefore aims for removal of phenol from its aqueous solution through adsorption process. Four bio-adsorbents such as guava tree bark, rice husk, neem leaves, activated carbon fr [....] » Read More
Diatoms, unicellular photosynthetic algae that occur in all water territories on earth. Their cell walls are composed of amorphous biosilica also called frustule. They exhibit nanoporous to microporous and macroporous patterning that is specific to particular species. Attributabl [....] » Read More
Mercury is one of the most hazardous air pollutants. Due to high vapour pressure of mercury under ambient conditions, exposed mercury may lead to significant mercury air vapour concentration in working atmosphere. The disadvantages associated with the available treatment technolo [....] » Read More
Mixed matrix membrane for gas separation is an advanced technology for the cost effective fabrication of high performing defect-free membranes. Compared to the conventional membranes, mixed matrix membrane prove to be effective for cleaner energy production, natural gas purificat [....] » Read More
Organic photovoltaics (OPs) have been notably developed in the last years, OLED technology is now on the market in devices such as smartphones and flat screens. On the other hand, organic solar cells (OSC) are been used in buildings and cars as solar windows and even in clothes t [....] » Read More
This study is aimed to review the topics of chemical engineering to take in consideration for the scaling-up of reactors, in order to perform processes based on the application of the sonochemistry at industrial level. Sonochemistry is an emergent technology, defined as chemistry [....] » Read More
High-temperature proton exchange membrane fuel cells (HT-PEMFCs) are promising candidates for the sustainable conversion of chemical into electrical energy with the option of utilizing sustainable fuels like green methanol. The use of methanol is beneficial if no hydrogen infrast [....] » Read More
Known catalysts containing iron ores as an active component, for example, in the oxidation of sulfur dioxide; processing of carbon-containing raw materials to obtain liquid and gaseous products, etc. One of the main advantages of such catalysts is the low cost of their production [....] » Read More
(Per)fluorinated compounds are a substance class of increasing interest. The unique characteristics of molecules with fluorine substituents with regard to lipophilicity, solubility, chemical reactivity strongly affect biochemical processes such as binding ability and metabolic st [....] » Read More
Zn(II) and Zn(II)-Cr(III) oxides are demonstrated to be efficient, noble-metal-free catalysts for one-step dehydroisomerization of alpha-pinene to para-cymene in the gas phase. This is an example of the use of heterogeneous catalysis for the conversion of renewable feedstock into [....] » Read More
Amide bond is arguably the most fundamental functionality in organic chemistry. Yet, new strategies are always needed to meet the contemporary synthetic challenges. Classical methods, using coupling agents, metal catalysts or harsh reaction conditions become less and less favored [....] » Read More
The results of studying the kinetics of spontaneous (homogeneous) and catalyzed (heterogeneous) crystal nucleation in silicate glass is presented for glasses in the Li2O–SiO2 system. Nucleation is catalyzed via the photosensitive mechanism by adding poorly soluble impuritie [....] » Read More
The nearest neighborhood of an element of a cluster system is percolation fields constructed around it in the phase spaces of properties. The presence of the nearest neighborhood in the cluster elements leads to the formation of structures, the dominant feature of which is the to [....] » Read More
The metallurgical industry has been looking for hydrometallurgical-based processes as an option in recent years because of some related inherent advantages, such as the ability to handle waste electrical and electronic equipment (WEEE or e-waste) with feasible waste management an [....] » Read More
Title : Optimization of Experiments for Heterogeneous Reactor Processes
Miroslaw Szukiewicz, Rzeszow University of Technology, Poland
The study of chemical kinetics is concerned with the measurement and interpretation of the rates of chemical reactions in the so-called process window. It tracks how quickly, the transition from an initial to the final states of reaction occurs and what compounds are formed [....] » Read More
Title : Intermetallic Hf2B2Ir5 as OER electrocatalyst
Iryna Antonyshyn, Max Planck Institute for Chemical Physics of Solids, Germany
The transition from fossil fuels to renewable energy sources requires multiple solutions, among which water electrolysis will play an important role. Considering proton-exchange-membrane (PEM) electrolysis with its advantages as a route for hydrogen production, the kinetics of bo [....] » Read More
Title : Biocatalysis in search of effective anticancer agents :A novel sugar esters based on polyhydroxyalkanoate monomers
Wojciech Snoch, Polish Academy of Sciences, Poland
Bacterial polyhydroxyalkanoates (PHA) are natural polyesters synthetized in unfavorable environmental conditions to store and reuse carbon source inside a microbial cell. They are also a rich source of valuable intermediates that can be chemically modified in numerous ways [....] » Read More
Title : Sustainable heterogeneous catalysts for arylation of arenes via C H and C O bond activation
G Satishkumar, Vellore Institute of Technology, India
Selective cleaving and functionalizing C-H, C-O bond in organic chemistry still remains a great challenge due to its weakest reactivity. Transition metal catalysts played a significant role in constructing various organic molecules through C-C coupling by activating the C-H and C [....] » Read More
Title : Enhancing the stability of Co Fischer Tropsch catalysts with boron promotion
Adrian Tan Kong Fei, Curtin University, Malaysia
Fischer-Tropsch synthesis (FTS) converts synthesis gas, a mixture of CO and H2, into various hydrocarbon products. Co catalysts are supported on various inert materials to increase their dispersion. They are preferred for FTS because of their good hydrocarbon selectivity, high CO [....] » Read More
Title : DFT study of catalytic hydrodeoxygenation of furan and derivatives on different metallic edge of MoS2
Wilfried G Kanhounnon, Universite d’Abomey-Calavi, Benin
Biomass is a sustainable feedstock expected to replace the fossil fuels in energy production. Biomass derivative oils contain however a high amount of oxygenated compounds. This is disadvantageous for the direct utilization of bio-oil as transportation fuels since these oxygenate [....] » Read More
Title : Conjugated porous polymers: Potential testbed for platinum free electrocatalysis for oxygen reduction reaction
Sujoy Bandyopadhyaya, Indrashil University, India
Background: Starting from the grand old activated charcoal to zeolites, porous materials have been utilized for environmental and technological benefits for mankind. Of late, porous organic polymers (POPs) have emerged as a new class of functional materials with applications rang [....] » Read More
Title : The mechanism of the vitamin B12 active forms catalytic processes in human body
Tudor Spataru, Columbia University, United States
For decades Methionine Synthase process has been considered as an energy barrier process by research community. Nevertheless, the in-vivo Methionine Synthase process can, in principle, run unlimited number of its turnovers without side effects and products. This requires two vali [....] » Read More
Title : Transferase enzymes used in drug synthesis
Ozlem Alptekin, University of Cukurova, Turkey
Transferase enzymes catalyse the transfer of different functional groups of a donor molecule to another molecule. In drug synthesis, they are especially used to obtain enantiomerically pure drug intermediates. This kind of chemoenzymatic synthesis is used to improve unfavourable [....] » Read More
Title : Microbial hydrolytic enzymes - Power house of green fuel
Nivedita Sharma, Dr Y S Parmar University of Horticulture & Forestry, India
The world is facing a reduction of global fossil fuels resources, like petroleum, natural gas, or charcoal, while energy requirements are progressively growing up. Fossil fuels should be replaced, at least partially by biofuels once the current fuel supply is suspected to be unsu [....] » Read More
Title : Ab initio tools for upgrading of biomass and production of biofuels
Michael Badawi, University of Lorraine, France
Pyrolysis of lignin, derived from lignocellulosic biomass, produces bio-oils with high oxygen content (20-45 wt.%). These bio-oils can be upgraded by hydrodeoxygenation (HDO), a thermal catalytic process under H2 pressure, to obtain more valuable oxygen-free products. Thus, [....] » Read More
Title : The influence of temperature and presence of organic sulfur R S H on the separation degree of organic solids from wastewater
Petru Spataru, Institute of Chemistry, Moldova, Republic of
In the technology of separation of organic solids from wastewater, there are several ways of combining activated sludge, produced under technological aeration conditions, with primary sediment, obtaining different results depending on the ambient temperature, so the natural clima [....] » Read More
Title : BODIPY dyes in light driven catalysis
Seda Cetindere, Gebze Technical University, Turkey
Due to population growth and rising industrialization, the global energy demand will increase significantly over the coming decades. Amongst several alternative energy schemes, hydrogen has been considered as one of the most promising candidates to provide sustainable, carbon neu [....] » Read More
Title : Development of cost-effective catalytic systems for total oxidation of VOCs by utilization of solid fuel combustion by products
Silviya Vasileva Boycheva, Technical University of Sofia, Bulgaria
Coal-based energy production still plays a leading role worldwide, growing in a number of fast-developing countries. The European Union's strategy for the next decade is to limit the burning of coal, but the number of incinerators and gasifiers for municipal waste continues t [....] » Read More
Title : Application of biophotocatalytic system for CO2 mitigation in anerobic biogas production
Emmanuel Kweinor Tetteh, Durban University of Technology, South Africa
With the rapid increase in global energy consumption and depletion of natural resources, economic assessment of photo -bioreactor technology in wastewater settings for water and energy (biogas) production comes as an essential drive for global sustainability development. Thus, re [....] » Read More
Title : Implementation of spinels types of NiAl2O4, CoAl2O4 and Ni-Co2O4 as emerging nanoparticles catalysts for upgrading of extra heavy oil including hydrogen production under supercritical water conditions
Richard Djimasbe, Kazan Federal University, Russian Federation
Spinel types of catalysts were successfully synthesized, and employed in this work in order to consider theirs performance in upgrading process extra heavy oil from Taha oilfield (China) to produce light oil and mainly for gases production (methane and hydrogen). The results of X [....] » Read More
Title : Lattice Boltzmann simulation of metal foam porosity effects on phase transition phenomenon in a latent heat storage device
Riheb Mabrouk, University of Monastir, Tunisia
This paper performs a numerical evaluation of the geometric structure of metal foam such as pore density (PPI; number of pores per inch) and porosity effect on melting and solidifying phenomena heat transfer in an open-ended rectangular porous channel (metal foam) contained a pha [....] » Read More
Title : Pyrolytic production of biofuel intermediates in the presence of zeolites: A focus on continuous operations
Guray Yildiz, Izmir Institute of Technology, Turkey
Renewable energy sources principally used for power and heat production (wind, solar, etc.), are not suitable for the production of conventional fuels and raw materials (e.g. petroleum-based chemicals) currently used in the existing industries. To continue the production of chemi [....] » Read More
Title : Picoplankton under the influence of climate change
Ece Kilic, Iskenderun Technical University, Turkey
Anthropogenic activities like greenhouse gas emission, land use change and deforestation alter the dynamics of atmosphere. Ecological life in the marine environment depends on the balance between atmosphere and ocean; so, variations in the climate cause changes in the chemical an [....] » Read More
Title : Biomass-derived molecules valorization: from furfural to 2,5 furan dicarboxylic acid using a two-step oxidation/carboxylation process
Francesco Nocito, University of Bari, Italy
Biomass-derived oxygenate-species can be considered an alternative to fossil resources derived chemicals. Among them furfural, that can be easily produced from xylose dehydration over acid catalysts, has received great attention as precursor of commodity chemicals. In this paper [....] » Read More
Title : Gas generation mechanism of interaction between organic matter and water in high evolution stage
Dawei Chen, Research Institute of Petroleum Exploration & Development, China
In this paper, a comparative simulation experiment of bitumen, crude oil and kerogen samples under water and no water conditions was conducted to study the mechanism of the interaction between highly evolved organic matter and water. The results show that. The participation of wa [....] » Read More
Title : Eco-friendly preparation of copper oxide graphene nanocomposites and their Fenton like activation of persulphate for the degradation of 4-chlorophenol
Binitha N Narayanan, Sree Neelakanta Government Sanskrit College Pattambi, India
Facile preparation of graphene in an eco-friendly manner and development of its composites for enhanced catalytic performance is one of the main targets of researchers. Green synthesis of copper oxide/graphene nanocomposites are performed here by a simple hydrothermal treatment o [....] » Read More